/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:30:07,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:30:07,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:30:07,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:30:07,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:30:07,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:30:07,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:30:07,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:30:07,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:30:07,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:30:07,940 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:30:07,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:30:07,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:30:07,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:30:07,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:30:07,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:30:07,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:30:07,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:30:07,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:30:07,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:30:07,944 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:30:07,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:30:07,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:07,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:30:07,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:30:07,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:30:07,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:30:07,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:30:07,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:30:07,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:30:07,946 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:30:08,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:30:08,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:30:08,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:30:08,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:30:08,192 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:30:08,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-26 21:30:09,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:30:09,326 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:30:09,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-26 21:30:09,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df84a148/e789cf390eb34ccd84e134b4b5b890d8/FLAG2f7ad64b3 [2023-08-26 21:30:09,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df84a148/e789cf390eb34ccd84e134b4b5b890d8 [2023-08-26 21:30:09,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:30:09,349 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:30:09,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:09,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:30:09,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:30:09,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6069687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09, skipping insertion in model container [2023-08-26 21:30:09,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,397 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:30:09,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:09,727 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:30:09,750 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-26 21:30:09,751 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-26 21:30:09,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:09,811 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:09,811 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:09,816 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:30:09,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09 WrapperNode [2023-08-26 21:30:09,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:09,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:09,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:30:09,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:30:09,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,867 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-08-26 21:30:09,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:09,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:30:09,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:30:09,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:30:09,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:30:09,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:30:09,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:30:09,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:30:09,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (1/1) ... [2023-08-26 21:30:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:30:09,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:30:09,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:30:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:30:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:30:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:30:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:30:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:30:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:30:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:30:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:30:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:30:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:30:09,994 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:30:10,123 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:30:10,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:30:10,397 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:30:10,559 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:30:10,560 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:30:10,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:10 BoogieIcfgContainer [2023-08-26 21:30:10,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:30:10,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:30:10,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:30:10,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:30:10,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:30:09" (1/3) ... [2023-08-26 21:30:10,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca2aa67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:10, skipping insertion in model container [2023-08-26 21:30:10,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:09" (2/3) ... [2023-08-26 21:30:10,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca2aa67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:10, skipping insertion in model container [2023-08-26 21:30:10,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:10" (3/3) ... [2023-08-26 21:30:10,567 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-26 21:30:10,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:30:10,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 21:30:10,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:30:10,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:30:10,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 117 transitions, 249 flow [2023-08-26 21:30:10,700 INFO L124 PetriNetUnfolderBase]: 3/114 cut-off events. [2023-08-26 21:30:10,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:10,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 3/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-26 21:30:10,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 117 transitions, 249 flow [2023-08-26 21:30:10,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 114 transitions, 237 flow [2023-08-26 21:30:10,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:30:10,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 114 transitions, 237 flow [2023-08-26 21:30:10,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 114 transitions, 237 flow [2023-08-26 21:30:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 114 transitions, 237 flow [2023-08-26 21:30:10,747 INFO L124 PetriNetUnfolderBase]: 3/114 cut-off events. [2023-08-26 21:30:10,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:10,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 3/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-26 21:30:10,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 2732 [2023-08-26 21:30:14,283 INFO L134 LiptonReduction]: Checked pairs total: 9004 [2023-08-26 21:30:14,283 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-26 21:30:14,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:30:14,295 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@447e8a00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:30:14,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 21:30:14,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:30:14,298 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 21:30:14,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:14,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:14,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:30:14,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:14,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash 578921634, now seen corresponding path program 1 times [2023-08-26 21:30:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350811725] [2023-08-26 21:30:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350811725] [2023-08-26 21:30:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350811725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241822645] [2023-08-26 21:30:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:14,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 222 [2023-08-26 21:30:14,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:14,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:14,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 222 [2023-08-26 21:30:14,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:14,894 INFO L124 PetriNetUnfolderBase]: 1965/2969 cut-off events. [2023-08-26 21:30:14,894 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-26 21:30:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6000 conditions, 2969 events. 1965/2969 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14303 event pairs, 749 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 5989. Up to 1970 conditions per place. [2023-08-26 21:30:14,908 INFO L140 encePairwiseOnDemand]: 212/222 looper letters, 44 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-26 21:30:14,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 209 flow [2023-08-26 21:30:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-26 21:30:14,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-26 21:30:14,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-26 21:30:14,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-26 21:30:14,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:14,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-26 21:30:14,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:14,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:14,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:14,932 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 67 flow. Second operand 3 states and 324 transitions. [2023-08-26 21:30:14,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 209 flow [2023-08-26 21:30:14,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:14,935 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 100 flow [2023-08-26 21:30:14,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-26 21:30:14,938 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-26 21:30:14,939 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 100 flow [2023-08-26 21:30:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:14,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:14,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:30:14,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:14,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1952989753, now seen corresponding path program 1 times [2023-08-26 21:30:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937883922] [2023-08-26 21:30:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937883922] [2023-08-26 21:30:15,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937883922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:15,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:15,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:15,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071557805] [2023-08-26 21:30:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:15,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 222 [2023-08-26 21:30:15,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:15,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 222 [2023-08-26 21:30:15,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:15,406 INFO L124 PetriNetUnfolderBase]: 1431/2394 cut-off events. [2023-08-26 21:30:15,406 INFO L125 PetriNetUnfolderBase]: For 162/174 co-relation queries the response was YES. [2023-08-26 21:30:15,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 2394 events. 1431/2394 cut-off events. For 162/174 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12922 event pairs, 304 based on Foata normal form. 0/2059 useless extension candidates. Maximal degree in co-relation 5518. Up to 1646 conditions per place. [2023-08-26 21:30:15,417 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 41 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-26 21:30:15,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 230 flow [2023-08-26 21:30:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-26 21:30:15,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2023-08-26 21:30:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-26 21:30:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-26 21:30:15,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:15,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-26 21:30:15,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,427 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 100 flow. Second operand 3 states and 321 transitions. [2023-08-26 21:30:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 230 flow [2023-08-26 21:30:15,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:15,429 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 98 flow [2023-08-26 21:30:15,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-08-26 21:30:15,430 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-26 21:30:15,430 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 98 flow [2023-08-26 21:30:15,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:15,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:15,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:30:15,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:15,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash 77610288, now seen corresponding path program 1 times [2023-08-26 21:30:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240049507] [2023-08-26 21:30:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:15,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:15,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240049507] [2023-08-26 21:30:15,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240049507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:15,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:15,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010699896] [2023-08-26 21:30:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:15,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-26 21:30:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:15,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-26 21:30:15,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:16,102 INFO L124 PetriNetUnfolderBase]: 1779/2814 cut-off events. [2023-08-26 21:30:16,102 INFO L125 PetriNetUnfolderBase]: For 413/459 co-relation queries the response was YES. [2023-08-26 21:30:16,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 2814 events. 1779/2814 cut-off events. For 413/459 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14221 event pairs, 663 based on Foata normal form. 0/2466 useless extension candidates. Maximal degree in co-relation 6562. Up to 1498 conditions per place. [2023-08-26 21:30:16,114 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 52 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2023-08-26 21:30:16,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 326 flow [2023-08-26 21:30:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2023-08-26 21:30:16,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2023-08-26 21:30:16,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2023-08-26 21:30:16,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2023-08-26 21:30:16,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:16,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2023-08-26 21:30:16,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,118 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 98 flow. Second operand 4 states and 384 transitions. [2023-08-26 21:30:16,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 326 flow [2023-08-26 21:30:16,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:16,120 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 170 flow [2023-08-26 21:30:16,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-26 21:30:16,121 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-26 21:30:16,121 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 170 flow [2023-08-26 21:30:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:16,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:30:16,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:16,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -273844033, now seen corresponding path program 1 times [2023-08-26 21:30:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132869939] [2023-08-26 21:30:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132869939] [2023-08-26 21:30:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132869939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:16,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:16,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543295860] [2023-08-26 21:30:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:16,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:16,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:16,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:16,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 222 [2023-08-26 21:30:16,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:16,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 222 [2023-08-26 21:30:16,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:16,457 INFO L124 PetriNetUnfolderBase]: 1550/2385 cut-off events. [2023-08-26 21:30:16,457 INFO L125 PetriNetUnfolderBase]: For 1637/1688 co-relation queries the response was YES. [2023-08-26 21:30:16,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7301 conditions, 2385 events. 1550/2385 cut-off events. For 1637/1688 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11500 event pairs, 498 based on Foata normal form. 15/2186 useless extension candidates. Maximal degree in co-relation 7286. Up to 1482 conditions per place. [2023-08-26 21:30:16,468 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 53 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-26 21:30:16,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 372 flow [2023-08-26 21:30:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-08-26 21:30:16,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2023-08-26 21:30:16,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-08-26 21:30:16,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-08-26 21:30:16,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:16,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-08-26 21:30:16,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,472 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 170 flow. Second operand 4 states and 406 transitions. [2023-08-26 21:30:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 372 flow [2023-08-26 21:30:16,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:16,476 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 164 flow [2023-08-26 21:30:16,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-26 21:30:16,477 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-26 21:30:16,477 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 164 flow [2023-08-26 21:30:16,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:16,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:16,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:30:16,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:16,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -357850932, now seen corresponding path program 1 times [2023-08-26 21:30:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631745437] [2023-08-26 21:30:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631745437] [2023-08-26 21:30:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631745437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:16,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:16,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:16,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295035312] [2023-08-26 21:30:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:16,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:16,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 222 [2023-08-26 21:30:16,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:16,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 222 [2023-08-26 21:30:16,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:16,803 INFO L124 PetriNetUnfolderBase]: 1292/1973 cut-off events. [2023-08-26 21:30:16,803 INFO L125 PetriNetUnfolderBase]: For 1569/1610 co-relation queries the response was YES. [2023-08-26 21:30:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6278 conditions, 1973 events. 1292/1973 cut-off events. For 1569/1610 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9106 event pairs, 453 based on Foata normal form. 7/1938 useless extension candidates. Maximal degree in co-relation 6262. Up to 959 conditions per place. [2023-08-26 21:30:16,811 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 74 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-08-26 21:30:16,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 530 flow [2023-08-26 21:30:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2023-08-26 21:30:16,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2023-08-26 21:30:16,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 423 transitions. [2023-08-26 21:30:16,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 423 transitions. [2023-08-26 21:30:16,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:16,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 423 transitions. [2023-08-26 21:30:16,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,816 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 164 flow. Second operand 4 states and 423 transitions. [2023-08-26 21:30:16,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 530 flow [2023-08-26 21:30:16,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 83 transitions, 525 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:16,818 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 203 flow [2023-08-26 21:30:16,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-26 21:30:16,818 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-26 21:30:16,819 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 203 flow [2023-08-26 21:30:16,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:16,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:16,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:16,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:30:16,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:16,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1088298630, now seen corresponding path program 1 times [2023-08-26 21:30:16,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214447948] [2023-08-26 21:30:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:17,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:17,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214447948] [2023-08-26 21:30:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214447948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752209006] [2023-08-26 21:30:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:17,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-26 21:30:17,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:17,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-26 21:30:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:17,395 INFO L124 PetriNetUnfolderBase]: 1572/2370 cut-off events. [2023-08-26 21:30:17,395 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2023-08-26 21:30:17,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8154 conditions, 2370 events. 1572/2370 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10858 event pairs, 220 based on Foata normal form. 6/2358 useless extension candidates. Maximal degree in co-relation 8137. Up to 1812 conditions per place. [2023-08-26 21:30:17,407 INFO L140 encePairwiseOnDemand]: 210/222 looper letters, 57 selfloop transitions, 22 changer transitions 3/82 dead transitions. [2023-08-26 21:30:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 572 flow [2023-08-26 21:30:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-08-26 21:30:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2023-08-26 21:30:17,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-08-26 21:30:17,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-08-26 21:30:17,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:17,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-08-26 21:30:17,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,411 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 203 flow. Second operand 4 states and 387 transitions. [2023-08-26 21:30:17,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 572 flow [2023-08-26 21:30:17,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 545 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:17,415 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 376 flow [2023-08-26 21:30:17,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-08-26 21:30:17,416 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-26 21:30:17,416 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 376 flow [2023-08-26 21:30:17,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:17,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:17,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:30:17,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:17,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash 622479483, now seen corresponding path program 1 times [2023-08-26 21:30:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:17,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601681574] [2023-08-26 21:30:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601681574] [2023-08-26 21:30:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601681574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:17,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:17,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685803268] [2023-08-26 21:30:17,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:17,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:30:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:30:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:30:17,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-26 21:30:17,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:17,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:17,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-26 21:30:17,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:18,273 INFO L124 PetriNetUnfolderBase]: 1510/2315 cut-off events. [2023-08-26 21:30:18,273 INFO L125 PetriNetUnfolderBase]: For 3432/3461 co-relation queries the response was YES. [2023-08-26 21:30:18,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9629 conditions, 2315 events. 1510/2315 cut-off events. For 3432/3461 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10750 event pairs, 121 based on Foata normal form. 32/2329 useless extension candidates. Maximal degree in co-relation 9609. Up to 1753 conditions per place. [2023-08-26 21:30:18,290 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 79 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2023-08-26 21:30:18,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 102 transitions, 881 flow [2023-08-26 21:30:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-26 21:30:18,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2023-08-26 21:30:18,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-26 21:30:18,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-26 21:30:18,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:18,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-26 21:30:18,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:18,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:18,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:18,294 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 376 flow. Second operand 4 states and 402 transitions. [2023-08-26 21:30:18,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 102 transitions, 881 flow [2023-08-26 21:30:18,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 102 transitions, 881 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:30:18,299 INFO L231 Difference]: Finished difference. Result has 53 places, 68 transitions, 555 flow [2023-08-26 21:30:18,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=555, PETRI_PLACES=53, PETRI_TRANSITIONS=68} [2023-08-26 21:30:18,300 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2023-08-26 21:30:18,300 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 68 transitions, 555 flow [2023-08-26 21:30:18,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:18,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:18,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:18,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:30:18,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:18,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -853012591, now seen corresponding path program 1 times [2023-08-26 21:30:18,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:18,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763630128] [2023-08-26 21:30:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:18,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763630128] [2023-08-26 21:30:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763630128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:19,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183268789] [2023-08-26 21:30:19,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:19,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:19,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:19,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 68 transitions, 555 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:19,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:19,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:19,581 INFO L124 PetriNetUnfolderBase]: 1996/3137 cut-off events. [2023-08-26 21:30:19,582 INFO L125 PetriNetUnfolderBase]: For 5664/5664 co-relation queries the response was YES. [2023-08-26 21:30:19,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14292 conditions, 3137 events. 1996/3137 cut-off events. For 5664/5664 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15938 event pairs, 95 based on Foata normal form. 33/3134 useless extension candidates. Maximal degree in co-relation 14268. Up to 1739 conditions per place. [2023-08-26 21:30:19,596 INFO L140 encePairwiseOnDemand]: 217/222 looper letters, 121 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2023-08-26 21:30:19,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 150 transitions, 1435 flow [2023-08-26 21:30:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-26 21:30:19,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44069069069069067 [2023-08-26 21:30:19,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-26 21:30:19,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-26 21:30:19,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:19,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-26 21:30:19,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,603 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,603 INFO L175 Difference]: Start difference. First operand has 53 places, 68 transitions, 555 flow. Second operand 6 states and 587 transitions. [2023-08-26 21:30:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 150 transitions, 1435 flow [2023-08-26 21:30:19,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 150 transitions, 1418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:19,607 INFO L231 Difference]: Finished difference. Result has 61 places, 81 transitions, 764 flow [2023-08-26 21:30:19,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=61, PETRI_TRANSITIONS=81} [2023-08-26 21:30:19,609 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-26 21:30:19,609 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 81 transitions, 764 flow [2023-08-26 21:30:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:19,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:19,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:30:19,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:19,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1470456543, now seen corresponding path program 1 times [2023-08-26 21:30:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:19,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772987859] [2023-08-26 21:30:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:19,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772987859] [2023-08-26 21:30:19,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772987859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:19,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:30:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034271966] [2023-08-26 21:30:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:19,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:30:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:30:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:30:19,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 222 [2023-08-26 21:30:19,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 81 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:19,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:19,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 222 [2023-08-26 21:30:19,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:20,371 INFO L124 PetriNetUnfolderBase]: 1990/3111 cut-off events. [2023-08-26 21:30:20,371 INFO L125 PetriNetUnfolderBase]: For 7625/7625 co-relation queries the response was YES. [2023-08-26 21:30:20,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14819 conditions, 3111 events. 1990/3111 cut-off events. For 7625/7625 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15558 event pairs, 286 based on Foata normal form. 6/3084 useless extension candidates. Maximal degree in co-relation 14790. Up to 2348 conditions per place. [2023-08-26 21:30:20,387 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 78 selfloop transitions, 28 changer transitions 0/111 dead transitions. [2023-08-26 21:30:20,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 1187 flow [2023-08-26 21:30:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-08-26 21:30:20,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2023-08-26 21:30:20,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-08-26 21:30:20,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-08-26 21:30:20,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:20,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-08-26 21:30:20,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:20,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:20,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:20,391 INFO L175 Difference]: Start difference. First operand has 61 places, 81 transitions, 764 flow. Second operand 4 states and 406 transitions. [2023-08-26 21:30:20,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 1187 flow [2023-08-26 21:30:20,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 1173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:20,400 INFO L231 Difference]: Finished difference. Result has 65 places, 90 transitions, 939 flow [2023-08-26 21:30:20,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=939, PETRI_PLACES=65, PETRI_TRANSITIONS=90} [2023-08-26 21:30:20,401 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-26 21:30:20,401 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 90 transitions, 939 flow [2023-08-26 21:30:20,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:20,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:20,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:30:20,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:20,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash -274767390, now seen corresponding path program 1 times [2023-08-26 21:30:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:20,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901172997] [2023-08-26 21:30:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901172997] [2023-08-26 21:30:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901172997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:30:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283690618] [2023-08-26 21:30:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:20,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:30:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:30:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:30:20,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:20,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 90 transitions, 939 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:20,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:20,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:21,535 INFO L124 PetriNetUnfolderBase]: 2258/3516 cut-off events. [2023-08-26 21:30:21,535 INFO L125 PetriNetUnfolderBase]: For 11114/11178 co-relation queries the response was YES. [2023-08-26 21:30:21,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17821 conditions, 3516 events. 2258/3516 cut-off events. For 11114/11178 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18182 event pairs, 164 based on Foata normal form. 76/3559 useless extension candidates. Maximal degree in co-relation 17789. Up to 1590 conditions per place. [2023-08-26 21:30:21,554 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 107 selfloop transitions, 41 changer transitions 0/153 dead transitions. [2023-08-26 21:30:21,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 153 transitions, 1699 flow [2023-08-26 21:30:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:30:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:30:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 674 transitions. [2023-08-26 21:30:21,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337194337194337 [2023-08-26 21:30:21,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 674 transitions. [2023-08-26 21:30:21,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 674 transitions. [2023-08-26 21:30:21,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:21,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 674 transitions. [2023-08-26 21:30:21,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:21,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:21,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:21,559 INFO L175 Difference]: Start difference. First operand has 65 places, 90 transitions, 939 flow. Second operand 7 states and 674 transitions. [2023-08-26 21:30:21,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 153 transitions, 1699 flow [2023-08-26 21:30:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 1654 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:21,572 INFO L231 Difference]: Finished difference. Result has 70 places, 103 transitions, 1152 flow [2023-08-26 21:30:21,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1152, PETRI_PLACES=70, PETRI_TRANSITIONS=103} [2023-08-26 21:30:21,572 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2023-08-26 21:30:21,573 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 103 transitions, 1152 flow [2023-08-26 21:30:21,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:21,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:21,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:21,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:30:21,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:21,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1136073514, now seen corresponding path program 2 times [2023-08-26 21:30:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:21,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89509734] [2023-08-26 21:30:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:21,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:21,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89509734] [2023-08-26 21:30:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89509734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:30:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258021212] [2023-08-26 21:30:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:30:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:30:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:30:21,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 222 [2023-08-26 21:30:21,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 103 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:21,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:21,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 222 [2023-08-26 21:30:21,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:22,530 INFO L124 PetriNetUnfolderBase]: 2555/3968 cut-off events. [2023-08-26 21:30:22,530 INFO L125 PetriNetUnfolderBase]: For 16224/16290 co-relation queries the response was YES. [2023-08-26 21:30:22,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22012 conditions, 3968 events. 2555/3968 cut-off events. For 16224/16290 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21177 event pairs, 150 based on Foata normal form. 87/4022 useless extension candidates. Maximal degree in co-relation 21979. Up to 2590 conditions per place. [2023-08-26 21:30:22,548 INFO L140 encePairwiseOnDemand]: 212/222 looper letters, 120 selfloop transitions, 69 changer transitions 0/194 dead transitions. [2023-08-26 21:30:22,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 194 transitions, 2349 flow [2023-08-26 21:30:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:30:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:30:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 700 transitions. [2023-08-26 21:30:22,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2023-08-26 21:30:22,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 700 transitions. [2023-08-26 21:30:22,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 700 transitions. [2023-08-26 21:30:22,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:22,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 700 transitions. [2023-08-26 21:30:22,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:22,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:22,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:22,555 INFO L175 Difference]: Start difference. First operand has 70 places, 103 transitions, 1152 flow. Second operand 7 states and 700 transitions. [2023-08-26 21:30:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 194 transitions, 2349 flow [2023-08-26 21:30:22,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 194 transitions, 2261 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:22,569 INFO L231 Difference]: Finished difference. Result has 77 places, 141 transitions, 1754 flow [2023-08-26 21:30:22,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1754, PETRI_PLACES=77, PETRI_TRANSITIONS=141} [2023-08-26 21:30:22,569 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2023-08-26 21:30:22,569 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 141 transitions, 1754 flow [2023-08-26 21:30:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:22,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:22,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:30:22,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:22,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1534908304, now seen corresponding path program 3 times [2023-08-26 21:30:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718695658] [2023-08-26 21:30:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718695658] [2023-08-26 21:30:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718695658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051637155] [2023-08-26 21:30:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:23,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 222 [2023-08-26 21:30:23,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 141 transitions, 1754 flow. Second operand has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:23,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:23,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 222 [2023-08-26 21:30:23,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:23,744 INFO L124 PetriNetUnfolderBase]: 3057/4714 cut-off events. [2023-08-26 21:30:23,744 INFO L125 PetriNetUnfolderBase]: For 27840/27917 co-relation queries the response was YES. [2023-08-26 21:30:23,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28298 conditions, 4714 events. 3057/4714 cut-off events. For 27840/27917 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 25696 event pairs, 175 based on Foata normal form. 82/4763 useless extension candidates. Maximal degree in co-relation 28262. Up to 2666 conditions per place. [2023-08-26 21:30:23,768 INFO L140 encePairwiseOnDemand]: 212/222 looper letters, 157 selfloop transitions, 85 changer transitions 0/247 dead transitions. [2023-08-26 21:30:23,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 247 transitions, 3446 flow [2023-08-26 21:30:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2023-08-26 21:30:23,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2023-08-26 21:30:23,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2023-08-26 21:30:23,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2023-08-26 21:30:23,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:23,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2023-08-26 21:30:23,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:23,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:23,774 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:23,774 INFO L175 Difference]: Start difference. First operand has 77 places, 141 transitions, 1754 flow. Second operand 6 states and 591 transitions. [2023-08-26 21:30:23,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 247 transitions, 3446 flow [2023-08-26 21:30:23,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 247 transitions, 3343 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:23,820 INFO L231 Difference]: Finished difference. Result has 83 places, 173 transitions, 2450 flow [2023-08-26 21:30:23,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2450, PETRI_PLACES=83, PETRI_TRANSITIONS=173} [2023-08-26 21:30:23,821 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-08-26 21:30:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 173 transitions, 2450 flow [2023-08-26 21:30:23,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:23,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:23,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:30:23,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:23,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1583803984, now seen corresponding path program 4 times [2023-08-26 21:30:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299908333] [2023-08-26 21:30:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:24,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299908333] [2023-08-26 21:30:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299908333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:24,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519206724] [2023-08-26 21:30:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:24,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:24,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:24,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:24,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:24,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 173 transitions, 2450 flow. Second operand has 8 states, 8 states have (on average 87.75) internal successors, (702), 8 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:24,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:24,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:24,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:25,313 INFO L124 PetriNetUnfolderBase]: 3538/5429 cut-off events. [2023-08-26 21:30:25,313 INFO L125 PetriNetUnfolderBase]: For 41433/41550 co-relation queries the response was YES. [2023-08-26 21:30:25,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35338 conditions, 5429 events. 3538/5429 cut-off events. For 41433/41550 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 30549 event pairs, 334 based on Foata normal form. 118/5506 useless extension candidates. Maximal degree in co-relation 35299. Up to 2780 conditions per place. [2023-08-26 21:30:25,341 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 139 selfloop transitions, 128 changer transitions 0/272 dead transitions. [2023-08-26 21:30:25,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 272 transitions, 4014 flow [2023-08-26 21:30:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:30:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:30:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 764 transitions. [2023-08-26 21:30:25,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2023-08-26 21:30:25,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 764 transitions. [2023-08-26 21:30:25,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 764 transitions. [2023-08-26 21:30:25,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:25,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 764 transitions. [2023-08-26 21:30:25,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:25,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:25,347 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:25,347 INFO L175 Difference]: Start difference. First operand has 83 places, 173 transitions, 2450 flow. Second operand 8 states and 764 transitions. [2023-08-26 21:30:25,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 272 transitions, 4014 flow [2023-08-26 21:30:25,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 272 transitions, 3958 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-26 21:30:25,423 INFO L231 Difference]: Finished difference. Result has 93 places, 214 transitions, 3364 flow [2023-08-26 21:30:25,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3364, PETRI_PLACES=93, PETRI_TRANSITIONS=214} [2023-08-26 21:30:25,423 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2023-08-26 21:30:25,424 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 214 transitions, 3364 flow [2023-08-26 21:30:25,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.75) internal successors, (702), 8 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:25,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:25,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:25,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:30:25,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:25,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2010323958, now seen corresponding path program 1 times [2023-08-26 21:30:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:25,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091281474] [2023-08-26 21:30:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091281474] [2023-08-26 21:30:26,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091281474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:26,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346169691] [2023-08-26 21:30:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:26,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:26,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:26,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:26,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 214 transitions, 3364 flow. Second operand has 8 states, 8 states have (on average 87.875) internal successors, (703), 8 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:26,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:26,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:26,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:27,142 INFO L124 PetriNetUnfolderBase]: 3989/6138 cut-off events. [2023-08-26 21:30:27,142 INFO L125 PetriNetUnfolderBase]: For 64342/64552 co-relation queries the response was YES. [2023-08-26 21:30:27,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43880 conditions, 6138 events. 3989/6138 cut-off events. For 64342/64552 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 35604 event pairs, 271 based on Foata normal form. 172/6264 useless extension candidates. Maximal degree in co-relation 43836. Up to 3043 conditions per place. [2023-08-26 21:30:27,174 INFO L140 encePairwiseOnDemand]: 212/222 looper letters, 187 selfloop transitions, 135 changer transitions 0/327 dead transitions. [2023-08-26 21:30:27,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 327 transitions, 5285 flow [2023-08-26 21:30:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:30:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:30:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-26 21:30:27,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364364364364364 [2023-08-26 21:30:27,191 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-26 21:30:27,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-26 21:30:27,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:27,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-26 21:30:27,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.88888888888889) internal successors, (872), 9 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:27,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:27,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:27,195 INFO L175 Difference]: Start difference. First operand has 93 places, 214 transitions, 3364 flow. Second operand 9 states and 872 transitions. [2023-08-26 21:30:27,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 327 transitions, 5285 flow [2023-08-26 21:30:27,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 327 transitions, 5076 flow, removed 104 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:27,341 INFO L231 Difference]: Finished difference. Result has 105 places, 254 transitions, 4321 flow [2023-08-26 21:30:27,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4321, PETRI_PLACES=105, PETRI_TRANSITIONS=254} [2023-08-26 21:30:27,341 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2023-08-26 21:30:27,341 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 254 transitions, 4321 flow [2023-08-26 21:30:27,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.875) internal successors, (703), 8 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:27,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:30:27,342 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:27,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 236845204, now seen corresponding path program 1 times [2023-08-26 21:30:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925528068] [2023-08-26 21:30:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925528068] [2023-08-26 21:30:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925528068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:27,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:30:27,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025071461] [2023-08-26 21:30:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:30:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:30:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:30:27,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 222 [2023-08-26 21:30:27,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 254 transitions, 4321 flow. Second operand has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:27,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:27,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 222 [2023-08-26 21:30:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:28,946 INFO L124 PetriNetUnfolderBase]: 4431/6870 cut-off events. [2023-08-26 21:30:28,946 INFO L125 PetriNetUnfolderBase]: For 78854/79092 co-relation queries the response was YES. [2023-08-26 21:30:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49951 conditions, 6870 events. 4431/6870 cut-off events. For 78854/79092 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 41165 event pairs, 355 based on Foata normal form. 264/7054 useless extension candidates. Maximal degree in co-relation 49901. Up to 4646 conditions per place. [2023-08-26 21:30:28,984 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 213 selfloop transitions, 119 changer transitions 3/340 dead transitions. [2023-08-26 21:30:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 340 transitions, 5816 flow [2023-08-26 21:30:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:30:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:30:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 778 transitions. [2023-08-26 21:30:28,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380630630630631 [2023-08-26 21:30:28,986 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 778 transitions. [2023-08-26 21:30:28,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 778 transitions. [2023-08-26 21:30:28,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:28,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 778 transitions. [2023-08-26 21:30:28,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:28,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:28,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:28,990 INFO L175 Difference]: Start difference. First operand has 105 places, 254 transitions, 4321 flow. Second operand 8 states and 778 transitions. [2023-08-26 21:30:28,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 340 transitions, 5816 flow [2023-08-26 21:30:29,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 340 transitions, 5606 flow, removed 49 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:29,120 INFO L231 Difference]: Finished difference. Result has 112 places, 284 transitions, 4866 flow [2023-08-26 21:30:29,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=4114, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4866, PETRI_PLACES=112, PETRI_TRANSITIONS=284} [2023-08-26 21:30:29,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2023-08-26 21:30:29,120 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 284 transitions, 4866 flow [2023-08-26 21:30:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:29,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:29,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 21:30:29,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:29,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash 283429214, now seen corresponding path program 2 times [2023-08-26 21:30:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:29,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939781109] [2023-08-26 21:30:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939781109] [2023-08-26 21:30:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939781109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 21:30:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606151523] [2023-08-26 21:30:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 21:30:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 21:30:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-26 21:30:29,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-26 21:30:29,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 284 transitions, 4866 flow. Second operand has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:29,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:29,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-26 21:30:29,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:31,323 INFO L124 PetriNetUnfolderBase]: 4830/7481 cut-off events. [2023-08-26 21:30:31,323 INFO L125 PetriNetUnfolderBase]: For 95654/95938 co-relation queries the response was YES. [2023-08-26 21:30:31,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56447 conditions, 7481 events. 4830/7481 cut-off events. For 95654/95938 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 45434 event pairs, 373 based on Foata normal form. 240/7642 useless extension candidates. Maximal degree in co-relation 56395. Up to 4170 conditions per place. [2023-08-26 21:30:31,367 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 228 selfloop transitions, 160 changer transitions 0/393 dead transitions. [2023-08-26 21:30:31,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 393 transitions, 6994 flow [2023-08-26 21:30:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:30:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:30:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 762 transitions. [2023-08-26 21:30:31,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42905405405405406 [2023-08-26 21:30:31,369 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 762 transitions. [2023-08-26 21:30:31,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 762 transitions. [2023-08-26 21:30:31,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:31,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 762 transitions. [2023-08-26 21:30:31,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.25) internal successors, (762), 8 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:31,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:31,372 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:31,372 INFO L175 Difference]: Start difference. First operand has 112 places, 284 transitions, 4866 flow. Second operand 8 states and 762 transitions. [2023-08-26 21:30:31,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 393 transitions, 6994 flow [2023-08-26 21:30:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 393 transitions, 6845 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:31,534 INFO L231 Difference]: Finished difference. Result has 118 places, 328 transitions, 6014 flow [2023-08-26 21:30:31,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=4722, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6014, PETRI_PLACES=118, PETRI_TRANSITIONS=328} [2023-08-26 21:30:31,535 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2023-08-26 21:30:31,535 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 328 transitions, 6014 flow [2023-08-26 21:30:31,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:31,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:31,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 21:30:31,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:31,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash 286571684, now seen corresponding path program 3 times [2023-08-26 21:30:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:31,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793783367] [2023-08-26 21:30:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793783367] [2023-08-26 21:30:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793783367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:32,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:32,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034118514] [2023-08-26 21:30:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:32,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:32,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:32,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:32,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 328 transitions, 6014 flow. Second operand has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:32,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:32,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:32,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:33,737 INFO L124 PetriNetUnfolderBase]: 6055/9586 cut-off events. [2023-08-26 21:30:33,738 INFO L125 PetriNetUnfolderBase]: For 130237/130568 co-relation queries the response was YES. [2023-08-26 21:30:33,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73194 conditions, 9586 events. 6055/9586 cut-off events. For 130237/130568 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 62546 event pairs, 507 based on Foata normal form. 341/9779 useless extension candidates. Maximal degree in co-relation 73140. Up to 3927 conditions per place. [2023-08-26 21:30:33,811 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 289 selfloop transitions, 168 changer transitions 6/468 dead transitions. [2023-08-26 21:30:33,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 468 transitions, 8659 flow [2023-08-26 21:30:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:30:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:30:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 693 transitions. [2023-08-26 21:30:33,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2023-08-26 21:30:33,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 693 transitions. [2023-08-26 21:30:33,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 693 transitions. [2023-08-26 21:30:33,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:33,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 693 transitions. [2023-08-26 21:30:33,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:33,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:33,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:33,817 INFO L175 Difference]: Start difference. First operand has 118 places, 328 transitions, 6014 flow. Second operand 7 states and 693 transitions. [2023-08-26 21:30:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 468 transitions, 8659 flow [2023-08-26 21:30:34,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 468 transitions, 8425 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 21:30:34,086 INFO L231 Difference]: Finished difference. Result has 123 places, 369 transitions, 7147 flow [2023-08-26 21:30:34,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=5780, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7147, PETRI_PLACES=123, PETRI_TRANSITIONS=369} [2023-08-26 21:30:34,087 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2023-08-26 21:30:34,087 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 369 transitions, 7147 flow [2023-08-26 21:30:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:34,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:34,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:34,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 21:30:34,087 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:34,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -159791290, now seen corresponding path program 1 times [2023-08-26 21:30:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594052341] [2023-08-26 21:30:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594052341] [2023-08-26 21:30:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594052341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090281008] [2023-08-26 21:30:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:34,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:34,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:34,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-26 21:30:34,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 369 transitions, 7147 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:34,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:34,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-26 21:30:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:36,356 INFO L124 PetriNetUnfolderBase]: 7869/12295 cut-off events. [2023-08-26 21:30:36,356 INFO L125 PetriNetUnfolderBase]: For 178412/178412 co-relation queries the response was YES. [2023-08-26 21:30:36,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95715 conditions, 12295 events. 7869/12295 cut-off events. For 178412/178412 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 80728 event pairs, 1000 based on Foata normal form. 62/12195 useless extension candidates. Maximal degree in co-relation 95658. Up to 6805 conditions per place. [2023-08-26 21:30:36,450 INFO L140 encePairwiseOnDemand]: 210/222 looper letters, 414 selfloop transitions, 163 changer transitions 3/580 dead transitions. [2023-08-26 21:30:36,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 580 transitions, 11881 flow [2023-08-26 21:30:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2023-08-26 21:30:36,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403153153153153 [2023-08-26 21:30:36,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2023-08-26 21:30:36,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2023-08-26 21:30:36,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:36,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2023-08-26 21:30:36,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:36,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:36,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:36,453 INFO L175 Difference]: Start difference. First operand has 123 places, 369 transitions, 7147 flow. Second operand 4 states and 391 transitions. [2023-08-26 21:30:36,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 580 transitions, 11881 flow [2023-08-26 21:30:36,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 580 transitions, 11665 flow, removed 80 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:36,975 INFO L231 Difference]: Finished difference. Result has 128 places, 465 transitions, 9751 flow [2023-08-26 21:30:36,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=9751, PETRI_PLACES=128, PETRI_TRANSITIONS=465} [2023-08-26 21:30:36,976 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2023-08-26 21:30:36,976 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 465 transitions, 9751 flow [2023-08-26 21:30:36,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:36,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:36,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:36,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 21:30:36,977 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:36,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash 190908368, now seen corresponding path program 1 times [2023-08-26 21:30:36,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:36,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806503365] [2023-08-26 21:30:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:36,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806503365] [2023-08-26 21:30:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806503365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:37,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:37,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931029364] [2023-08-26 21:30:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:37,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:37,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:37,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-26 21:30:37,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 465 transitions, 9751 flow. Second operand has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:37,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:37,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-26 21:30:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:40,527 INFO L124 PetriNetUnfolderBase]: 8122/12850 cut-off events. [2023-08-26 21:30:40,527 INFO L125 PetriNetUnfolderBase]: For 220961/221523 co-relation queries the response was YES. [2023-08-26 21:30:40,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107476 conditions, 12850 events. 8122/12850 cut-off events. For 220961/221523 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 87917 event pairs, 1067 based on Foata normal form. 515/13171 useless extension candidates. Maximal degree in co-relation 107415. Up to 9313 conditions per place. [2023-08-26 21:30:40,614 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 401 selfloop transitions, 257 changer transitions 0/664 dead transitions. [2023-08-26 21:30:40,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 664 transitions, 14440 flow [2023-08-26 21:30:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:30:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:30:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 851 transitions. [2023-08-26 21:30:40,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-08-26 21:30:40,616 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 851 transitions. [2023-08-26 21:30:40,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 851 transitions. [2023-08-26 21:30:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:40,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 851 transitions. [2023-08-26 21:30:40,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:40,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:40,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:40,620 INFO L175 Difference]: Start difference. First operand has 128 places, 465 transitions, 9751 flow. Second operand 9 states and 851 transitions. [2023-08-26 21:30:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 664 transitions, 14440 flow [2023-08-26 21:30:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 664 transitions, 14326 flow, removed 57 selfloop flow, removed 0 redundant places. [2023-08-26 21:30:41,182 INFO L231 Difference]: Finished difference. Result has 140 places, 558 transitions, 12347 flow [2023-08-26 21:30:41,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=9665, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12347, PETRI_PLACES=140, PETRI_TRANSITIONS=558} [2023-08-26 21:30:41,183 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2023-08-26 21:30:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 558 transitions, 12347 flow [2023-08-26 21:30:41,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:41,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:41,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 21:30:41,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:41,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash 595637412, now seen corresponding path program 2 times [2023-08-26 21:30:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150339428] [2023-08-26 21:30:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150339428] [2023-08-26 21:30:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150339428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238042014] [2023-08-26 21:30:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:41,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 222 [2023-08-26 21:30:41,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 558 transitions, 12347 flow. Second operand has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:41,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:41,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 222 [2023-08-26 21:30:41,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:45,085 INFO L124 PetriNetUnfolderBase]: 8642/13750 cut-off events. [2023-08-26 21:30:45,085 INFO L125 PetriNetUnfolderBase]: For 249446/250005 co-relation queries the response was YES. [2023-08-26 21:30:45,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116381 conditions, 13750 events. 8642/13750 cut-off events. For 249446/250005 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 96253 event pairs, 782 based on Foata normal form. 512/14060 useless extension candidates. Maximal degree in co-relation 116314. Up to 6790 conditions per place. [2023-08-26 21:30:45,186 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 391 selfloop transitions, 303 changer transitions 3/703 dead transitions. [2023-08-26 21:30:45,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 703 transitions, 15940 flow [2023-08-26 21:30:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:30:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:30:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 858 transitions. [2023-08-26 21:30:45,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2023-08-26 21:30:45,187 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 858 transitions. [2023-08-26 21:30:45,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 858 transitions. [2023-08-26 21:30:45,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:45,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 858 transitions. [2023-08-26 21:30:45,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.33333333333333) internal successors, (858), 9 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:45,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:45,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:45,191 INFO L175 Difference]: Start difference. First operand has 140 places, 558 transitions, 12347 flow. Second operand 9 states and 858 transitions. [2023-08-26 21:30:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 703 transitions, 15940 flow [2023-08-26 21:30:45,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 703 transitions, 15565 flow, removed 115 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:45,988 INFO L231 Difference]: Finished difference. Result has 151 places, 597 transitions, 13867 flow [2023-08-26 21:30:45,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=12003, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13867, PETRI_PLACES=151, PETRI_TRANSITIONS=597} [2023-08-26 21:30:45,988 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 112 predicate places. [2023-08-26 21:30:45,988 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 597 transitions, 13867 flow [2023-08-26 21:30:45,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:45,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:45,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 21:30:45,989 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:45,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash -677111202, now seen corresponding path program 3 times [2023-08-26 21:30:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736912948] [2023-08-26 21:30:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736912948] [2023-08-26 21:30:46,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736912948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5302707] [2023-08-26 21:30:46,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:46,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 222 [2023-08-26 21:30:46,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 597 transitions, 13867 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 222 [2023-08-26 21:30:46,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:49,788 INFO L124 PetriNetUnfolderBase]: 9210/14702 cut-off events. [2023-08-26 21:30:49,789 INFO L125 PetriNetUnfolderBase]: For 297233/297853 co-relation queries the response was YES. [2023-08-26 21:30:49,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127453 conditions, 14702 events. 9210/14702 cut-off events. For 297233/297853 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 104600 event pairs, 1175 based on Foata normal form. 535/14967 useless extension candidates. Maximal degree in co-relation 127381. Up to 9050 conditions per place. [2023-08-26 21:30:50,081 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 463 selfloop transitions, 265 changer transitions 3/737 dead transitions. [2023-08-26 21:30:50,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 737 transitions, 17567 flow [2023-08-26 21:30:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:30:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:30:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 660 transitions. [2023-08-26 21:30:50,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2023-08-26 21:30:50,082 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 660 transitions. [2023-08-26 21:30:50,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 660 transitions. [2023-08-26 21:30:50,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:50,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 660 transitions. [2023-08-26 21:30:50,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:50,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:50,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:50,085 INFO L175 Difference]: Start difference. First operand has 151 places, 597 transitions, 13867 flow. Second operand 7 states and 660 transitions. [2023-08-26 21:30:50,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 737 transitions, 17567 flow [2023-08-26 21:30:51,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 737 transitions, 17367 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:51,078 INFO L231 Difference]: Finished difference. Result has 155 places, 606 transitions, 14563 flow [2023-08-26 21:30:51,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=13689, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14563, PETRI_PLACES=155, PETRI_TRANSITIONS=606} [2023-08-26 21:30:51,079 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2023-08-26 21:30:51,079 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 606 transitions, 14563 flow [2023-08-26 21:30:51,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:51,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:51,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:51,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 21:30:51,079 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:51,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1691212448, now seen corresponding path program 4 times [2023-08-26 21:30:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407007636] [2023-08-26 21:30:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:51,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407007636] [2023-08-26 21:30:51,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407007636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:51,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:51,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:51,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272211280] [2023-08-26 21:30:51,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:51,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:51,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:51,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 222 [2023-08-26 21:30:51,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 606 transitions, 14563 flow. Second operand has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:51,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:51,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 222 [2023-08-26 21:30:51,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:55,650 INFO L124 PetriNetUnfolderBase]: 10907/17594 cut-off events. [2023-08-26 21:30:55,651 INFO L125 PetriNetUnfolderBase]: For 358898/359569 co-relation queries the response was YES. [2023-08-26 21:30:55,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152718 conditions, 17594 events. 10907/17594 cut-off events. For 358898/359569 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 130300 event pairs, 1983 based on Foata normal form. 613/17875 useless extension candidates. Maximal degree in co-relation 152645. Up to 12667 conditions per place. [2023-08-26 21:30:55,811 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 683 selfloop transitions, 138 changer transitions 3/830 dead transitions. [2023-08-26 21:30:55,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 830 transitions, 20467 flow [2023-08-26 21:30:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 21:30:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 21:30:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 988 transitions. [2023-08-26 21:30:55,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44504504504504505 [2023-08-26 21:30:55,813 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 988 transitions. [2023-08-26 21:30:55,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 988 transitions. [2023-08-26 21:30:55,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:55,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 988 transitions. [2023-08-26 21:30:55,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.8) internal successors, (988), 10 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:55,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:55,816 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:55,816 INFO L175 Difference]: Start difference. First operand has 155 places, 606 transitions, 14563 flow. Second operand 10 states and 988 transitions. [2023-08-26 21:30:55,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 830 transitions, 20467 flow [2023-08-26 21:30:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 830 transitions, 20210 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:57,389 INFO L231 Difference]: Finished difference. Result has 166 places, 655 transitions, 16016 flow [2023-08-26 21:30:57,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=14325, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16016, PETRI_PLACES=166, PETRI_TRANSITIONS=655} [2023-08-26 21:30:57,390 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2023-08-26 21:30:57,390 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 655 transitions, 16016 flow [2023-08-26 21:30:57,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:57,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:57,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:57,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 21:30:57,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:57,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash -748960656, now seen corresponding path program 5 times [2023-08-26 21:30:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777339880] [2023-08-26 21:30:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777339880] [2023-08-26 21:30:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777339880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16117239] [2023-08-26 21:30:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:57,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:30:57,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 655 transitions, 16016 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:57,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:57,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:30:57,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:01,934 INFO L124 PetriNetUnfolderBase]: 11585/18741 cut-off events. [2023-08-26 21:31:01,934 INFO L125 PetriNetUnfolderBase]: For 389702/390414 co-relation queries the response was YES. [2023-08-26 21:31:02,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163089 conditions, 18741 events. 11585/18741 cut-off events. For 389702/390414 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 141053 event pairs, 2340 based on Foata normal form. 676/19055 useless extension candidates. Maximal degree in co-relation 163011. Up to 14735 conditions per place. [2023-08-26 21:31:02,124 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 625 selfloop transitions, 121 changer transitions 3/755 dead transitions. [2023-08-26 21:31:02,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 755 transitions, 19187 flow [2023-08-26 21:31:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:31:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:31:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2023-08-26 21:31:02,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43093093093093093 [2023-08-26 21:31:02,129 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 574 transitions. [2023-08-26 21:31:02,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 574 transitions. [2023-08-26 21:31:02,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:02,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 574 transitions. [2023-08-26 21:31:02,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:02,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:02,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:02,131 INFO L175 Difference]: Start difference. First operand has 166 places, 655 transitions, 16016 flow. Second operand 6 states and 574 transitions. [2023-08-26 21:31:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 755 transitions, 19187 flow [2023-08-26 21:31:03,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 755 transitions, 18962 flow, removed 63 selfloop flow, removed 2 redundant places. [2023-08-26 21:31:03,859 INFO L231 Difference]: Finished difference. Result has 170 places, 655 transitions, 16041 flow [2023-08-26 21:31:03,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=15791, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16041, PETRI_PLACES=170, PETRI_TRANSITIONS=655} [2023-08-26 21:31:03,860 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2023-08-26 21:31:03,860 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 655 transitions, 16041 flow [2023-08-26 21:31:03,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:03,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:03,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:03,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 21:31:03,860 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:03,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -740040966, now seen corresponding path program 6 times [2023-08-26 21:31:03,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088285144] [2023-08-26 21:31:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:04,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088285144] [2023-08-26 21:31:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088285144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:04,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:04,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:31:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550455167] [2023-08-26 21:31:04,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:31:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:31:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:31:04,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 222 [2023-08-26 21:31:04,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 655 transitions, 16041 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:04,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:04,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 222 [2023-08-26 21:31:04,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:08,968 INFO L124 PetriNetUnfolderBase]: 12237/20000 cut-off events. [2023-08-26 21:31:08,968 INFO L125 PetriNetUnfolderBase]: For 424396/425113 co-relation queries the response was YES. [2023-08-26 21:31:09,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171445 conditions, 20000 events. 12237/20000 cut-off events. For 424396/425113 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 154558 event pairs, 1849 based on Foata normal form. 639/20100 useless extension candidates. Maximal degree in co-relation 171365. Up to 10518 conditions per place. [2023-08-26 21:31:09,190 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 438 selfloop transitions, 275 changer transitions 3/722 dead transitions. [2023-08-26 21:31:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 722 transitions, 18566 flow [2023-08-26 21:31:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:31:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:31:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 583 transitions. [2023-08-26 21:31:09,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376876876876877 [2023-08-26 21:31:09,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 583 transitions. [2023-08-26 21:31:09,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 583 transitions. [2023-08-26 21:31:09,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:09,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 583 transitions. [2023-08-26 21:31:09,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:09,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:09,195 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:09,195 INFO L175 Difference]: Start difference. First operand has 170 places, 655 transitions, 16041 flow. Second operand 6 states and 583 transitions. [2023-08-26 21:31:09,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 722 transitions, 18566 flow [2023-08-26 21:31:11,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 722 transitions, 18444 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:31:11,349 INFO L231 Difference]: Finished difference. Result has 174 places, 676 transitions, 17515 flow [2023-08-26 21:31:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=15919, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17515, PETRI_PLACES=174, PETRI_TRANSITIONS=676} [2023-08-26 21:31:11,350 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2023-08-26 21:31:11,350 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 676 transitions, 17515 flow [2023-08-26 21:31:11,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:11,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:11,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 21:31:11,350 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:11,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1241153239, now seen corresponding path program 1 times [2023-08-26 21:31:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286789048] [2023-08-26 21:31:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286789048] [2023-08-26 21:31:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286789048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:31:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889159088] [2023-08-26 21:31:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:11,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:31:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:31:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:31:11,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-26 21:31:11,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 676 transitions, 17515 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:11,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:11,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-26 21:31:11,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:14,658 INFO L124 PetriNetUnfolderBase]: 7301/13098 cut-off events. [2023-08-26 21:31:14,658 INFO L125 PetriNetUnfolderBase]: For 388328/389040 co-relation queries the response was YES. [2023-08-26 21:31:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108212 conditions, 13098 events. 7301/13098 cut-off events. For 388328/389040 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 110665 event pairs, 1117 based on Foata normal form. 1844/14357 useless extension candidates. Maximal degree in co-relation 108130. Up to 9568 conditions per place. [2023-08-26 21:31:15,030 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 1020 selfloop transitions, 8 changer transitions 3/1037 dead transitions. [2023-08-26 21:31:15,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1037 transitions, 27876 flow [2023-08-26 21:31:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:31:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:31:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2023-08-26 21:31:15,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2023-08-26 21:31:15,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2023-08-26 21:31:15,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2023-08-26 21:31:15,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:15,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2023-08-26 21:31:15,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:15,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:15,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:15,033 INFO L175 Difference]: Start difference. First operand has 174 places, 676 transitions, 17515 flow. Second operand 5 states and 507 transitions. [2023-08-26 21:31:15,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1037 transitions, 27876 flow [2023-08-26 21:31:15,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 1037 transitions, 27517 flow, removed 82 selfloop flow, removed 6 redundant places. [2023-08-26 21:31:15,724 INFO L231 Difference]: Finished difference. Result has 174 places, 515 transitions, 12700 flow [2023-08-26 21:31:15,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=12491, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12700, PETRI_PLACES=174, PETRI_TRANSITIONS=515} [2023-08-26 21:31:15,724 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2023-08-26 21:31:15,724 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 515 transitions, 12700 flow [2023-08-26 21:31:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:15,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:15,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:15,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 21:31:15,725 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:15,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -647279203, now seen corresponding path program 1 times [2023-08-26 21:31:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630349531] [2023-08-26 21:31:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:15,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:15,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630349531] [2023-08-26 21:31:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630349531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:15,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:15,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:31:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591157222] [2023-08-26 21:31:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:15,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:31:15,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:31:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:31:15,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-26 21:31:15,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 515 transitions, 12700 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:15,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:15,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-26 21:31:15,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:17,778 INFO L124 PetriNetUnfolderBase]: 4483/8621 cut-off events. [2023-08-26 21:31:17,779 INFO L125 PetriNetUnfolderBase]: For 280410/281124 co-relation queries the response was YES. [2023-08-26 21:31:17,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70127 conditions, 8621 events. 4483/8621 cut-off events. For 280410/281124 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 73692 event pairs, 371 based on Foata normal form. 1479/9563 useless extension candidates. Maximal degree in co-relation 70044. Up to 2796 conditions per place. [2023-08-26 21:31:17,853 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 921 selfloop transitions, 15 changer transitions 3/944 dead transitions. [2023-08-26 21:31:17,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 944 transitions, 24699 flow [2023-08-26 21:31:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:31:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:31:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 708 transitions. [2023-08-26 21:31:17,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2023-08-26 21:31:17,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 708 transitions. [2023-08-26 21:31:17,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 708 transitions. [2023-08-26 21:31:17,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:17,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 708 transitions. [2023-08-26 21:31:17,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.14285714285714) internal successors, (708), 7 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:17,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:17,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:17,857 INFO L175 Difference]: Start difference. First operand has 174 places, 515 transitions, 12700 flow. Second operand 7 states and 708 transitions. [2023-08-26 21:31:17,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 944 transitions, 24699 flow [2023-08-26 21:31:18,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 944 transitions, 23466 flow, removed 279 selfloop flow, removed 15 redundant places. [2023-08-26 21:31:18,292 INFO L231 Difference]: Finished difference. Result has 168 places, 330 transitions, 7455 flow [2023-08-26 21:31:18,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=7322, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7455, PETRI_PLACES=168, PETRI_TRANSITIONS=330} [2023-08-26 21:31:18,293 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2023-08-26 21:31:18,293 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 330 transitions, 7455 flow [2023-08-26 21:31:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:18,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:18,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:18,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 21:31:18,293 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:18,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1816027861, now seen corresponding path program 1 times [2023-08-26 21:31:18,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:18,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093923169] [2023-08-26 21:31:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:18,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:18,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093923169] [2023-08-26 21:31:18,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093923169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:18,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:31:18,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428163926] [2023-08-26 21:31:18,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:18,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:31:18,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:31:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:31:18,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 222 [2023-08-26 21:31:18,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 330 transitions, 7455 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:18,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:18,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 222 [2023-08-26 21:31:18,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:19,828 INFO L124 PetriNetUnfolderBase]: 4242/7933 cut-off events. [2023-08-26 21:31:19,829 INFO L125 PetriNetUnfolderBase]: For 186789/187169 co-relation queries the response was YES. [2023-08-26 21:31:19,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68236 conditions, 7933 events. 4242/7933 cut-off events. For 186789/187169 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 65219 event pairs, 365 based on Foata normal form. 324/8237 useless extension candidates. Maximal degree in co-relation 68160. Up to 3015 conditions per place. [2023-08-26 21:31:19,876 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 116 selfloop transitions, 10 changer transitions 418/546 dead transitions. [2023-08-26 21:31:19,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 546 transitions, 13434 flow [2023-08-26 21:31:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:31:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:31:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2023-08-26 21:31:19,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45765765765765765 [2023-08-26 21:31:19,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2023-08-26 21:31:19,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2023-08-26 21:31:19,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:19,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2023-08-26 21:31:19,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:19,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:19,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:19,880 INFO L175 Difference]: Start difference. First operand has 168 places, 330 transitions, 7455 flow. Second operand 5 states and 508 transitions. [2023-08-26 21:31:19,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 546 transitions, 13434 flow [2023-08-26 21:31:20,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 546 transitions, 13387 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-26 21:31:20,497 INFO L231 Difference]: Finished difference. Result has 165 places, 88 transitions, 1759 flow [2023-08-26 21:31:20,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=7396, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1759, PETRI_PLACES=165, PETRI_TRANSITIONS=88} [2023-08-26 21:31:20,498 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 126 predicate places. [2023-08-26 21:31:20,498 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 88 transitions, 1759 flow [2023-08-26 21:31:20,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:20,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:20,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 21:31:20,498 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:20,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -637573958, now seen corresponding path program 1 times [2023-08-26 21:31:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453898999] [2023-08-26 21:31:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:20,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:20,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453898999] [2023-08-26 21:31:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453898999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:31:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902068986] [2023-08-26 21:31:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:20,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:31:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:31:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:31:20,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-26 21:31:20,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 88 transitions, 1759 flow. Second operand has 7 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:20,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:20,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-26 21:31:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:20,984 INFO L124 PetriNetUnfolderBase]: 181/387 cut-off events. [2023-08-26 21:31:20,985 INFO L125 PetriNetUnfolderBase]: For 9663/9670 co-relation queries the response was YES. [2023-08-26 21:31:20,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 387 events. 181/387 cut-off events. For 9663/9670 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1618 event pairs, 23 based on Foata normal form. 12/399 useless extension candidates. Maximal degree in co-relation 3416. Up to 254 conditions per place. [2023-08-26 21:31:20,987 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 71 selfloop transitions, 25 changer transitions 18/116 dead transitions. [2023-08-26 21:31:20,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 116 transitions, 2283 flow [2023-08-26 21:31:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 21:31:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 21:31:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 915 transitions. [2023-08-26 21:31:20,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2023-08-26 21:31:20,988 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 915 transitions. [2023-08-26 21:31:20,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 915 transitions. [2023-08-26 21:31:20,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:20,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 915 transitions. [2023-08-26 21:31:20,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:20,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:20,991 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:20,991 INFO L175 Difference]: Start difference. First operand has 165 places, 88 transitions, 1759 flow. Second operand 10 states and 915 transitions. [2023-08-26 21:31:20,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 116 transitions, 2283 flow [2023-08-26 21:31:21,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 116 transitions, 1701 flow, removed 112 selfloop flow, removed 52 redundant places. [2023-08-26 21:31:21,006 INFO L231 Difference]: Finished difference. Result has 107 places, 84 transitions, 1277 flow [2023-08-26 21:31:21,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1277, PETRI_PLACES=107, PETRI_TRANSITIONS=84} [2023-08-26 21:31:21,007 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2023-08-26 21:31:21,007 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 84 transitions, 1277 flow [2023-08-26 21:31:21,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:21,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-26 21:31:21,007 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:21,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1522936211, now seen corresponding path program 1 times [2023-08-26 21:31:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:21,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327947899] [2023-08-26 21:31:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:21,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327947899] [2023-08-26 21:31:21,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327947899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:21,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:21,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:31:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727593131] [2023-08-26 21:31:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:21,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:31:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:31:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:31:21,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-26 21:31:21,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 84 transitions, 1277 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:21,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-26 21:31:21,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:21,222 INFO L124 PetriNetUnfolderBase]: 137/291 cut-off events. [2023-08-26 21:31:21,223 INFO L125 PetriNetUnfolderBase]: For 3802/3802 co-relation queries the response was YES. [2023-08-26 21:31:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 291 events. 137/291 cut-off events. For 3802/3802 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1118 event pairs, 11 based on Foata normal form. 16/307 useless extension candidates. Maximal degree in co-relation 2032. Up to 128 conditions per place. [2023-08-26 21:31:21,224 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 82 selfloop transitions, 10 changer transitions 30/124 dead transitions. [2023-08-26 21:31:21,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 2157 flow [2023-08-26 21:31:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:31:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:31:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-08-26 21:31:21,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-26 21:31:21,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-08-26 21:31:21,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-08-26 21:31:21,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:21,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-08-26 21:31:21,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,227 INFO L175 Difference]: Start difference. First operand has 107 places, 84 transitions, 1277 flow. Second operand 7 states and 666 transitions. [2023-08-26 21:31:21,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 124 transitions, 2157 flow [2023-08-26 21:31:21,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 124 transitions, 1974 flow, removed 45 selfloop flow, removed 13 redundant places. [2023-08-26 21:31:21,233 INFO L231 Difference]: Finished difference. Result has 102 places, 69 transitions, 945 flow [2023-08-26 21:31:21,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=945, PETRI_PLACES=102, PETRI_TRANSITIONS=69} [2023-08-26 21:31:21,234 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2023-08-26 21:31:21,234 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 69 transitions, 945 flow [2023-08-26 21:31:21,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:21,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:21,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 21:31:21,235 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:21,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -755449740, now seen corresponding path program 1 times [2023-08-26 21:31:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736590597] [2023-08-26 21:31:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736590597] [2023-08-26 21:31:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736590597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:31:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211536557] [2023-08-26 21:31:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:21,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:31:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:31:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:31:21,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 222 [2023-08-26 21:31:21,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 69 transitions, 945 flow. Second operand has 8 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:21,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:21,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 222 [2023-08-26 21:31:21,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:22,134 INFO L124 PetriNetUnfolderBase]: 134/311 cut-off events. [2023-08-26 21:31:22,134 INFO L125 PetriNetUnfolderBase]: For 2499/2503 co-relation queries the response was YES. [2023-08-26 21:31:22,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 311 events. 134/311 cut-off events. For 2499/2503 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1325 event pairs, 30 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 2030. Up to 137 conditions per place. [2023-08-26 21:31:22,135 INFO L140 encePairwiseOnDemand]: 217/222 looper letters, 49 selfloop transitions, 9 changer transitions 35/95 dead transitions. [2023-08-26 21:31:22,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 1366 flow [2023-08-26 21:31:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:31:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:31:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2023-08-26 21:31:22,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069069069069069 [2023-08-26 21:31:22,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2023-08-26 21:31:22,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2023-08-26 21:31:22,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:22,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2023-08-26 21:31:22,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:22,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:22,138 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:22,138 INFO L175 Difference]: Start difference. First operand has 102 places, 69 transitions, 945 flow. Second operand 6 states and 542 transitions. [2023-08-26 21:31:22,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 1366 flow [2023-08-26 21:31:22,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 1232 flow, removed 19 selfloop flow, removed 11 redundant places. [2023-08-26 21:31:22,145 INFO L231 Difference]: Finished difference. Result has 95 places, 58 transitions, 714 flow [2023-08-26 21:31:22,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=95, PETRI_TRANSITIONS=58} [2023-08-26 21:31:22,145 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-08-26 21:31:22,146 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 58 transitions, 714 flow [2023-08-26 21:31:22,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:22,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:22,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 21:31:22,146 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:22,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1138579618, now seen corresponding path program 2 times [2023-08-26 21:31:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142020417] [2023-08-26 21:31:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142020417] [2023-08-26 21:31:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142020417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 21:31:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63832317] [2023-08-26 21:31:23,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 21:31:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 21:31:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-26 21:31:23,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 222 [2023-08-26 21:31:23,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 58 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:23,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:23,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 222 [2023-08-26 21:31:23,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:23,423 INFO L124 PetriNetUnfolderBase]: 96/233 cut-off events. [2023-08-26 21:31:23,423 INFO L125 PetriNetUnfolderBase]: For 1512/1515 co-relation queries the response was YES. [2023-08-26 21:31:23,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 233 events. 96/233 cut-off events. For 1512/1515 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 889 event pairs, 10 based on Foata normal form. 3/235 useless extension candidates. Maximal degree in co-relation 1340. Up to 68 conditions per place. [2023-08-26 21:31:23,424 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 36 selfloop transitions, 8 changer transitions 60/105 dead transitions. [2023-08-26 21:31:23,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 1218 flow [2023-08-26 21:31:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 21:31:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 21:31:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 856 transitions. [2023-08-26 21:31:23,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855855855855856 [2023-08-26 21:31:23,425 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 856 transitions. [2023-08-26 21:31:23,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 856 transitions. [2023-08-26 21:31:23,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:23,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 856 transitions. [2023-08-26 21:31:23,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:23,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:23,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:23,427 INFO L175 Difference]: Start difference. First operand has 95 places, 58 transitions, 714 flow. Second operand 10 states and 856 transitions. [2023-08-26 21:31:23,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 1218 flow [2023-08-26 21:31:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 1137 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-08-26 21:31:23,432 INFO L231 Difference]: Finished difference. Result has 89 places, 30 transitions, 264 flow [2023-08-26 21:31:23,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=89, PETRI_TRANSITIONS=30} [2023-08-26 21:31:23,432 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2023-08-26 21:31:23,432 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 30 transitions, 264 flow [2023-08-26 21:31:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:31:23,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:23,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:23,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-26 21:31:23,432 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:23,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1886301802, now seen corresponding path program 3 times [2023-08-26 21:31:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875946930] [2023-08-26 21:31:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:31:23,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:31:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:31:23,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:31:23,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:31:23,502 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (17 of 18 remaining) [2023-08-26 21:31:23,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 21:31:23,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 21:31:23,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONASSERT (12 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 21:31:23,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 21:31:23,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 21:31:23,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 21:31:23,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONASSERT (2 of 18 remaining) [2023-08-26 21:31:23,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 21:31:23,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 21:31:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-26 21:31:23,506 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:23,510 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:31:23,510 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:31:23,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:31:23 BasicIcfg [2023-08-26 21:31:23,567 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:31:23,567 INFO L158 Benchmark]: Toolchain (without parser) took 74218.41ms. Allocated memory was 385.9MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 360.7MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 362.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.07ms. Allocated memory is still 385.9MB. Free memory was 360.7MB in the beginning and 334.9MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.43ms. Allocated memory is still 385.9MB. Free memory was 334.9MB in the beginning and 332.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: Boogie Preprocessor took 33.06ms. Allocated memory is still 385.9MB. Free memory was 332.3MB in the beginning and 329.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: RCFGBuilder took 659.28ms. Allocated memory is still 385.9MB. Free memory was 329.7MB in the beginning and 334.1MB in the end (delta: -4.4MB). Peak memory consumption was 29.7MB. Max. memory is 16.0GB. [2023-08-26 21:31:23,568 INFO L158 Benchmark]: TraceAbstraction took 73004.64ms. Allocated memory was 385.9MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 333.0MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-08-26 21:31:23,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 362.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 467.07ms. Allocated memory is still 385.9MB. Free memory was 360.7MB in the beginning and 334.9MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.43ms. Allocated memory is still 385.9MB. Free memory was 334.9MB in the beginning and 332.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.06ms. Allocated memory is still 385.9MB. Free memory was 332.3MB in the beginning and 329.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 659.28ms. Allocated memory is still 385.9MB. Free memory was 329.7MB in the beginning and 334.1MB in the end (delta: -4.4MB). Peak memory consumption was 29.7MB. Max. memory is 16.0GB. * TraceAbstraction took 73004.64ms. Allocated memory was 385.9MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 333.0MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 121 PlacesBefore, 39 PlacesAfterwards, 114 TransitionsBefore, 29 TransitionsAfterwards, 2732 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 9004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3215, independent: 2967, independent conditional: 0, independent unconditional: 2967, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1478, independent: 1417, independent conditional: 0, independent unconditional: 1417, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3215, independent: 1550, independent conditional: 0, independent unconditional: 1550, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 1478, unknown conditional: 0, unknown unconditional: 1478] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: assertion can be violated assertion can be violated We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p1_EAX = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L719] 0 _Bool x$flush_delayed; [L720] 0 int x$mem_tmp; [L721] 0 _Bool x$r_buff0_thd0; [L722] 0 _Bool x$r_buff0_thd1; [L723] 0 _Bool x$r_buff0_thd2; [L724] 0 _Bool x$r_buff0_thd3; [L725] 0 _Bool x$r_buff1_thd0; [L726] 0 _Bool x$r_buff1_thd1; [L727] 0 _Bool x$r_buff1_thd2; [L728] 0 _Bool x$r_buff1_thd3; [L729] 0 _Bool x$read_delayed; [L730] 0 int *x$read_delayed_var; [L731] 0 int x$w_buff0; [L732] 0 _Bool x$w_buff0_used; [L733] 0 int x$w_buff1; [L734] 0 _Bool x$w_buff1_used; [L736] 0 int y = 0; [L737] 0 _Bool weak$$choice0; [L738] 0 _Bool weak$$choice2; [L849] 0 pthread_t t2537; [L850] FCALL, FORK 0 pthread_create(&t2537, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2537, ((void *)0), P0, ((void *)0))=-2, t2537={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L851] 0 pthread_t t2538; [L852] FCALL, FORK 0 pthread_create(&t2538, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2538, ((void *)0), P1, ((void *)0))=-1, t2537={5:0}, t2538={6:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L853] 0 pthread_t t2539; [L854] FCALL, FORK 0 pthread_create(&t2539, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2539, ((void *)0), P2, ((void *)0))=0, t2537={5:0}, t2538={6:0}, t2539={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L812] 3 x$w_buff1 = x$w_buff0 [L813] 3 x$w_buff0 = 2 [L814] 3 x$w_buff1_used = x$w_buff0_used [L815] 3 x$w_buff0_used = (_Bool)1 [L816] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 3 !(!expression) [L816] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L817] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L818] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L819] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L820] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L821] 3 x$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L824] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L742] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2] [L747] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L748] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L749] 1 x$flush_delayed = weak$$choice2 [L750] 1 x$mem_tmp = x [L751] 1 x = !x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff1) [L752] 1 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff0)) [L753] 1 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff1 : x$w_buff1)) [L754] 1 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used)) [L755] 1 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L756] 1 x$r_buff0_thd1 = weak$$choice2 ? x$r_buff0_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff0_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1)) [L757] 1 x$r_buff1_thd1 = weak$$choice2 ? x$r_buff1_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff1_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L758] 1 __unbuffered_p0_EAX = x [L759] 1 x = x$flush_delayed ? x$mem_tmp : x [L760] 1 x$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2] [L772] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L765] EXPR 1 __unbuffered_cnt + 1 [L765] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L767] 1 return 0; [L775] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L776] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L777] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L778] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L779] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L782] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L783] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L784] 2 x$flush_delayed = weak$$choice2 [L785] 2 x$mem_tmp = x [L786] 2 x = !x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff1) [L787] 2 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff0)) [L788] 2 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff1 : x$w_buff1)) [L789] 2 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used)) [L790] 2 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L791] 2 x$r_buff0_thd2 = weak$$choice2 ? x$r_buff0_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff0_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2)) [L792] 2 x$r_buff1_thd2 = weak$$choice2 ? x$r_buff1_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff1_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L793] 2 __unbuffered_p1_EAX = x [L794] 2 x = x$flush_delayed ? x$mem_tmp : x [L795] 2 x$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=1, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L827] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L828] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L829] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L830] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L831] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=1, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L798] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L799] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L800] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L801] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L802] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=1, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L805] EXPR 2 __unbuffered_cnt + 1 [L805] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L807] 2 return 0; [L834] EXPR 3 __unbuffered_cnt + 1 [L834] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L836] 3 return 0; [L856] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L858] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L858] RET 0 assume_abort_if_not(main$tmp_guard0) [L860] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L861] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L862] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L863] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L864] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2537={5:0}, t2538={6:0}, t2539={3:0}, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=1, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L867] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L868] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L869] 0 x$flush_delayed = weak$$choice2 [L870] 0 x$mem_tmp = x [L871] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L872] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L873] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L874] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L875] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L877] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L878] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1) [L879] 0 x = x$flush_delayed ? x$mem_tmp : x [L880] 0 x$flush_delayed = (_Bool)0 [L882] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression [L19] CALL 0 reach_error() [L18] COND FALSE 0 !(0) [L18] 0 __assert_fail ("0", "safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.c", 9, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={66:67}, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] - UnprovableResult [Line: 765]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 805]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 805]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 852]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 850]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 72.9s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 56.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1311 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 648 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4209 IncrementalHoareTripleChecker+Invalid, 4857 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 648 mSolverCounterUnsat, 7 mSDtfsCounter, 4209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17515occurred in iteration=24, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 6045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-26 21:31:23,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...